Novel thermoelectric nanoantenna design for use in solar energy harvesting

In an article published in the SPIE Journal of Nanophotonics (JNP), researchers from a collaboration of three labs in Mexico demonstrate an innovative nanodevice for harvesting solar energy. The paper, "Thermoelectric efficiency optimization of nanoantennas for solar energy harvesting," reports that evolutive dipole nanoantennas (EDNs) generate a thermoelectric voltage three times larger than the classic dipole nanoantenna (CDN).

* This article was originally published here

Match me if you can: Cryptographic breakthrough helps spies to shake hands

When spies meet, they use secret handshakes to confirm their identities, ensuring they are who they say they are. Now, researchers at Stevens Institute of Technology, and colleagues, have solved a 15-year-old problem that allows handshake-style encryption to be used for time-delayed digital communications such as email—a challenge once thought to be impossible.

* This article was originally published here

Ethiopian clothes makers worst paid in the world: study

Ethiopia's clothes factory workers, producing items for top fashion brands including Guess, H&M and Calvin Klein, are the worst paid in the world, earning only $26 (23 euros) a month, a report said Tuesday.

* This article was originally published here

Patients of medicare providers committing fraud, abuse more likely to be poor, disabled

A new study from the Johns Hopkins Bloomberg School of Public Health analyzed providers excluded from Medicare for fraud and abuse, and found that the patients they treated prior to being banned were more likely to be minorities, disabled and dually-enrolled in Medicaid to supplement financial assistance for health care.

* This article was originally published here

Should we turn the Sahara Desert into a huge solar farm?

Whenever I visit the Sahara I am struck by how sunny and hot it is and how clear the sky can be. Aside from a few oases there is little vegetation, and most of the world's largest desert is covered with rocks, sand and sand dunes. The Saharan sun is powerful enough to provide Earth with significant solar energy.

* This article was originally published here